Originally Posted by
The _Banking_Scot
Hi,
I think the alpha extension on certain flight numbers relate to the ex-shuttle routes ( ie UK domestics LHR to MAD,EDI,NCL,GLA and ABZ)-maybe not all of them though
( Could be wrong though, in which case some one will be along with the correct answer in a little while)
Regards
TBS
Now I could also be wrong here (it was a few weeks ago now), but I'm sure I also heard the domestics use the designator "Shuttle" instead of "Speedbird".